DevTools: Set up utility context earlier (prevent from crash).

webkit/glue/devtools/debugger_agent_impl.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include <wtf/HashSet.h>
 #include <wtf/RefPtr.h>
 #include <wtf/Vector.h>
 
@@ skipping 78 matching lines @@
 }
 
 // static
 void DebuggerAgentImpl::ResetUtilityContext(
     Document* document,
     v8::Persistent<v8::Context>* context) {
   if (!context->IsEmpty()) {
     context->Dispose();
     context->Clear();
   }
-  if (!document) {
-    return;
-  }
   v8::HandleScope scope;
 
   // TODO(pfeldman): Validate against Soeren.
   // Set up the DOM window as the prototype of the new global object.
   v8::Handle<v8::Context> window_context =
       V8Proxy::context(document->frame());
   v8::Handle<v8::Object> window_global = window_context->Global();
   v8::Handle<v8::Value> window_wrapper =
       V8Proxy::lookupDOMWrapper(V8ClassIndex::DOMWINDOW, window_global);
 
@@ skipping 67 matching lines @@
     return "";
   } else {
     v8::Handle<v8::String> res_json = v8::Handle<v8::String>::Cast(res_obj);
     return WebCore::toWebCoreString(res_json);
   }
 }
 
 WebCore::Page* DebuggerAgentImpl::GetPage() {
   return web_view_impl_->page();
 }